Elusive coolant

[ChiTDI]

I've been chasing a slow but hidden coolant leak in an '05 Dodge Caravan V6 for a couple weeks. It calls for a HOAT coolant, which I think is Zerex G5. Until I find the leak and flush, I'm looking at Peak "LongLife" pre-mix as a top off. Any danger doing that?
Any thoughts on the leak- I've checked all hoses, pump, radiator, and now I'm looking at coolant migration along the electrical connectors, leaking heater core, etc.

 

[ewetho]

You can get have it died and checked for leaks with Blacklight and yellow glasses.

The Zerex is good.

 

[ChiTDI]

Search results showed that dye test and the black light. I was not familiar with it. You can rent the whole contraption/package from AZ or Murray's/ NAPA?

Thanks for the input. I thought that Zerez was OK.

 

[rcy]

My '99 3.8 had a leaking intake gasket. A UOA confirmed coolant in the oil. When I looked closely I could see it seeping externally as well.